/* { dg-options "-fdiagnostics-show-caret -Wreturn-local-addr" } */ int *address_of_local (void) { int some_local; return &some_local; /* { dg-warning "function returns address of local variable" } */ /* { dg-begin-multiline-output "" } return &some_local; ^~~~~~~~~~~ { dg-end-multiline-output "" } */ } void surplus_return_when_void_1 (void) { return 500; /* { dg-warning "'return' with a value, in function returning void" } */ /* { dg-begin-multiline-output "" } return 500; ^~~ { dg-end-multiline-output "" } */ /* { dg-begin-multiline-output "" } void surplus_return_when_void_1 (void) ^~~~~~~~~~~~~~~~~~~~~~~~~~ { dg-end-multiline-output "" } */ } void surplus_return_when_void_2 (int i, int j) { return i * j; /* { dg-warning "'return' with a value, in function returning void" } */ /* { dg-begin-multiline-output "" } return i * j; ~~^~~ { dg-end-multiline-output "" } */ /* { dg-begin-multiline-output "" } void surplus_return_when_void_2 (int i, int j) ^~~~~~~~~~~~~~~~~~~~~~~~~~ { dg-end-multiline-output "" } */ } int missing_return_value (void) { return; /* { dg-warning "'return' with no value, in function returning non-void" } */ /* { dg-begin-multiline-output "" } return; ^~~~~~ { dg-end-multiline-output "" } */ /* { dg-begin-multiline-output "" } int missing_return_value (void) ^~~~~~~~~~~~~~~~~~~~ { dg-end-multiline-output "" } */ /* TODO: ideally we'd underline the return type i.e. "int", but that location isn't captured. */ }